Improvement in boot and shoe seam rubbing machines



T.. K. KEITH. BOOT AND SHOE SEAM-RUBI'BING'MACHINE.

No.'172,031. Fa te'nted Jan. 11, 18 76,.

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UNITED STATES PATENT OFFICE.

THOMAS K. KEITH, OF HAVERHILIJ, ASSIGNOR OF ONE-HALF HIS RIGHT TOAUGUSTUS SEAVER, OF MILFORD, MASSACHUSETTS.

IMPROVEMENT IN BOOT AND SHOE SEAM RUBBING MACHINES.

Specification forming part of Letters Patent No. 172,031, dated January11, 1876; application filed August 31, 1875.

To all whom it may concern:

Be it known that I, THOMAS K. KEITH, of Haverhill, in the county ofEssex and State of Massachusetts, have ,i-nventeda new and useful devicefor Rubbing Down the Seams of Boots and Shoes; and I do hereby declarethatthe following is a full, clear, and exact description of the same,reference being had to the accompanying drawing, and to the letters ofreference marked thereon.

This device is intended to be used in connection with a sewing-machinesuitable for the purpose.

In the accompanying illustration, Figure l is a plan view of my device.Fig. 2 is a part longitudinal section. Fig. 3 is a transverse section.

Similar letters of reference indicate corresponding parts.

or represents a portion of the table of a sewing-machine, and a is thedriving-wheel. b is a shaft extending from the wheel a, and supported bybearings b. c and dare cams upon the shaft 12 or, as they are both madeof a single piece, they might be termed a double cam). The shape of thecam c is well shown in Fig. 3, and the shape of the cam d in Fig. 2. eis a rod extending down through a large opening in the table a to theCams 0 d. The opening is made large enough to allow the rod to playtherein.

The rods is pressed firmly against both cams by means of adiagonally-placed spring, f, connecting the said rod with a pin orprojection, g. The upper end of the rod 0 is fixed in the corner orelbow of the lever h. This lever h is provided with a slot, h, throughwhich apin,k, passes, thus attaching it to the table a. h" is the headof the lever or an enlarged portion, which comes into direct contactwith the seam and rubs it down. m is the plate upon which the leatherisplaced The leather (represented by -0 in Fig. 2) is placed upon bothsides the plate mthe seam at its end and when the machine sews the seamit rubs it down at the same time.

The lever h, for example, is in the position shown in Fig. 1. The cam d,as it rotates, so

presses the rod as to bring the head 71. of the lever up to the plate mthe camcthen presses it against the said plate, and pushes it a shortdistance along its edge, rubbing it down, and the lever h, slipping backby means of the slot h, resumes the position seen in Fig. 1. The deviceis simple, not liable to get out of repair, and very effective.

Having thus fully described my invention, what I claim, and desire tosecure by Letters Patent, is

In combination with the levers h h h and rod 6, the cams c (1, spring f,and shaft b, for the purpose of rubbing down the seam placed against theedge of the plate m substantially as herein set forth.

THOMAS K. KEITH.

Witnesses:

HENRY W. MERRILL, A. P. WOODMAN.

